Sigma Corporation

Sigma Corporation

Native name	株式会社シグマ
Type	Private KK
Industry	Electronics
Founded	Setagaya, Japan (September 1961 (1961-09))
Founder	Michihiro Yamaki
Headquarters	Asao-ku, Kawasaki, Kanagawa 215-8530, Japan
Key people	Kazuto Yamaki (CEO)
Products	Camera lenses Digital cameras Optical equipment
Number of employees	1,135
Subsidiaries	Foveon
Website	Official website
Footnotes / references ^[1]^[2]

Sigma Corporation (株式会社シグマ, Kabushiki-gaisha Shiguma) is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories. All Sigma products are produced in the company's own Aizu factory in Bandai, Fukushima, Japan. Although Sigma produces several camera models, the company is best known for producing high quality lenses and other accessories that are compatible with the cameras produced by other companies.^[3]

The company was founded in 1961 by Michihiro Yamaki, who was Sigma's CEO until his death at age 78 in 2012.^[4]

Sigma products work with cameras from Canon, Nikon, Pentax, Sony, Olympus and Panasonic, as well as their own cameras.

Sigma has also made lenses under the Quantaray name, which have been sold exclusively by Ritz Camera. Similarly, Sigma lenses were sold exclusively by the former Wolf Camera, but following the merger of Wolf and Ritz, both brands can be purchased.

Sigma's digital SLRs, the SD9, SD10, SD14 and SD15 and the latest SD1 are unusual in their use of the Foveon X3 image sensor. All use the SA lens mount. The Sigma DP1 and DP2, high-end compact P&S cameras, also use the Foveon X3 sensor, which gives them a much larger sensor than other cameras of this type.

Sigma is the world's largest independent lens manufacturer and is a family-owned business.^[5]

Cameras

Sigma has made a number of film SLR cameras, including the SA-300, SA-5, SA-7 and SA-9. Their latest consumer digital SLR is the SD15. During photokina 2010, Sigma announced their new flagship DSLR camera, the SD1. SD1 features a new 46MP Foveon X3 sensor with 1.5x crop, as opposed to the 1.7x crop of previous models.^[6]

All Sigma SLR and DSLR cameras use the Sigma SA mount, which is mechanically similar to the Pentax K mount and electrically an adaptation of the Canon EF lens mount lens control system.

Sigma also produces high-end compact digital cameras, the Sigma DP1, Sigma DP2, and Sigma DP3, through various iterations using APS-C sized sensors similar to those used in the DSLR line. Their 23.5 x 15.7 mm sensors were first based on the Sigma SD-14 DSLR, then the Sigma SD-15, then the Sigma SD1 and Sigma SD1 Merrill.

The current line of Sigma DP compact cameras make use of the Quattro sensor, a variant of the Foveon design using a higher resolution top layer and lower resolution lower layers combined into a final image that is equivalent to a 39 megapixel color filter array image.

The four compact cameras each have a fixed lens - the DP0 with a 14mm f/4 lens, the DP1 with a 19mm f/2.8 lens, the DP2 with a 30mm f/2.8 lens, and the DP3 with a 50mm F/2.8 lens (equivalent to 75mm on a 35mm SLR camera).

Lenses

This list is incomplete; you can help by expanding it.

Sigma makes autofocus lenses for the Sigma SA, Canon EF, Nikon F, Minolta/Sony α, Pentax K and Four Thirds lens mounts. Each lens may not be available in all mounts, and may lack certain features (such as HSM) on certain mounts. There have been some complaints of quality control and assurance issues of lens manufacturing.^[7]^[8]

In August 2013, Sigma announced that starting the following month, it would offer a mount conversion service for its newest "Global Vision" lenses—those with either an "A" (Art), "C" (Contemporary), or "S" (Sport) as part of their model name. For a cost that varies with lens and market—from $80 to $250 in the U.S., not including shipping costs—owners can send their lenses to their local Sigma company, which in turn sends them to Japan for mount replacement, including calibration and optimization for the new camera system. Lenses designed for DSLRs can be converted to Canon EF, Nikon F, Pentax K, Sigma SA, or Sony A mounts; those designed for MILCs can be converted to Micro Four Thirds or Sony E-mount.^[9]

Designations

Sigma 200–500mm F2.8 EX DG displayed at the 2008 photokina

ASP — Aspherical lens elements
APO — Apochromatic lens element(s), originally for "Advanced Performance Optics", not necessarily apochromatic
OS — In-lens "Optical Stabilization", analogous to Nikon VR or Canon IS
HSM — "Hyper-Sonic Motor", either in-lens ultrasonic motor or micro-motor, analogous to Nikon SWM (AF-S) (ultra-sonic or micro-motor), Canon USM (ultrasonic or micro-motor), Minolta/Konica Minolta/Sony SSM (ultrasonic motor) or Sony SAM (micro-motor), etc.
A — "Art Series", large aperture prime and zoom lenses, high optical performance. USB dock compatible. Part of 2013 lens lineup restructuring.
C — "Contemporary Series", combining optical performance with compactness. USB dock compatible. Part of 2013 lens lineup restructuring.
S — "Sports Series", telephoto and super-telephoto lenses. USB dock compatible. Part of 2013 lens lineup restructuring.
EX — "Excellence", EX-finish, high performance series.
DG — "Digital Grade", coatings optimized for DSLRs, full-frame as well as APS-C, also usable on 35mm film SLRs

Sigma macro, telephoto and wide angle lenses (left to right)

DC — "Digital Compact", lenses for DSLRs featuring APS-C size sensors, only
DL — "Deluxe", indicates lower-end film era lenses
DN — "Digital Neo", lenses for mirrorless interchangeable-lens cameras featuring APS-C and Micro Four Thirds size sensors
DF — "Dual Focus", lens features clutch to disengage focus ring when in AF mode
FLD — "'F' Low Dispersion" glass, the highest level low dispersion glass available with extremely high light transmission. This glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass
HF — "Helical Focusing", front element of lens does not rotate (useful for polarizing filters and petal lens hoods)
RF — "Rear Focusing", lenses employing rear-focusing, no length changes during focussing, no rotating front elements
IF — "Inner Focusing", length of lens does not change during focusing, no rotating front elements
UC — "Ultra-Compact"

Zoom lenses

Wide-angle zooms

8–16mm f/4-5.6 DC HSM
10–20mm f/4-5.6 EX DC HSM
10–20mm f/3.5 EX DC HSM
12–24mm f/4.5–5.6 EX DG Aspherical HSM
12–24mm f/4.5-5.6 DG Aspherical HSM II
15–30mm f/3.5–4.5 EX DG Aspherical
17–35mm f/2.8–4 EX DG Aspherical HSM
18–35mm f/3.5-4.5 Aspherical
20–40mm f/2.8 EX DG Aspherical
21–35mm f/3.5-4.2
24–35mm f/2 DG HSM Art

Standard zooms

17–50mm f/2.8 EX DC OS HSM
17–70mm f/2.8–4.5 DC MACRO HSM
17–70mm f/2.8-4.0 DC OS MACRO HSM
17–70mm f/2.8-4.0 DC OS MACRO HSM C
18–35mm f/1.8 DC HSM A
18–50mm f/2.8 EX DC
18–50mm f/2.8 EX DC MACRO
18–50mm f/2.8-4.5 DC OS HSM
18–50mm f/3.5–5.6 DC
24–60mm f/2.8 EX DG
24–70mm f/2.8 EX DG Macro
24–70mm f/2.8 EX DG HSM
24–70mm f/3.5–5.6 Aspherical HF
24–105mm f/4 DG OS HSM A
24–135mm f/2.8–4.5 Aspherical IF
28–70mm f/2.8 EX DG
28–70mm f/2.8–4 DG
28–70mm f/2.8–4 UC
28–70mm f/3.5–4.5 UC
28–80mm f/3.5-5.6 Aspherical Macro
28–84mm f/3.5–4.5
28–85mm f/3.5–4.5
28–105mm f/2.8–4 DG
28–105mm f/3.8–5.6 Aspherical IF
28–105mm f/4–5.6 UC
28–135mm f/3.8–5.6
28–135mm f/4–5.6
28–200mm f/3.5–5.6 DG Macro
28–200mm f/4–5.6
28–300mm f/3.5–6.3 DG Macro
28-300mm f/3.5-6.3 DL Hyperzoom Aspherical IF
35–70mm f/2.8–4
35–70mm f/3.5–4.5
35–80mm f/4–5.6 DL
35–105mm f/3.5–4.5 Macro
35–135mm f/3.5–4.5
35–135mm f/4–5.6 UC
35–200mm f/4–5.6
39–80mm f/3.5 XQ

Telephoto zooms

50-150mm f/2.8 EX DC HSM
50-150mm f/2.8 EX DC HSM II
50-150mm f/2.8 APO EX DC OS HSM
50–200mm f/3.5-4.5 APO
50–500mm f/4–6.3 EX DG HSM
50–500mm f/4.5-6.3 DG OS HSM
55–200mm f/4–5.6
70–150mm f/3.5
70–200mm f/2.8 EX DG MACRO HSM
70–200mm f/2.8 EX DG HSM
70–200mm f/2.8 EX DG MACRO HSM II
70–200mm f/2.8 EX DG APO OS HSM ^[10]
70-210mm f/2.8 APO
70–210mm f/3.5–4.5 APO
70-210mm f/4-5.6 UC
70-210mm f/4-5.6 UC-II
70–210mm f/4.5
70–250mm f/3.5-4.5
70–300mm f/4–5.6 DG MACRO
70–300mm f/4–5.6 APO DG MACRO
75–200mm f/2.8-3.5
75–200mm f/3.8
75–230mm f/4.5
75–250mm f/4-5
75–300mm f/4.5–5.6 APO
80–200mm f/3.5
80–200mm f/3.5-4.0
80–200mm f/4.5–5.6
80–400mm f/4.5–5.6 EX OS
100–200mm f/4.5
100–300mm f/4 EX DG HSM
100–300mm f/4.5–6.7 DL
100–500mm f/5.6–8 APO Zoom Tau
120–300mm f/2.8 EX HSM
120–300mm f/2.8 EX DG HSM
120–300mm f/2.8 DG OS HSM S
120–300mm f/5.6
120–300mm f/5.6-6.3
120–400mm f/4.5–5.6 APO DG OS HSM
135–400mm f/4.5–5.6 DG
150–500mm f/5–6.3 APO DG OS HSM
150–600mm f/5–6.3 DG OS HSM C
150–600mm f/5–6.3 DG OS HSM S
170–500mm f/5–6.3 DG
200–500mm f/2.8 EX DG (2x teleconverter included, allowing 400–1000mm f/5.6)
300–800mm f/5.6 APO EX DG HSM
350-1200mm f/11 APO

Prime lenses

Wide-angle primes

8mm f/3.5 EX DG Circular Fisheye
8mm f/4 EX DG Circular Fisheye
12mm f/8 Fisheye Ultra-Wideangle
14mm f/2.8 EX Aspherical HSM
14mm f/3.5
15mm f/2.8 EX DG Diagonal Fisheye
16mm f/2.8 XQ Filtermatic Diagonal Fisheye
18mm f/2.8 Filtermatic
18mm f/3.2 XQ
18mm f/3.5
20mm f/1.4 DG HSM Art
20mm f/1.8 EX DG Aspherical RF
24mm f/1.4 DG HSM Art
24mm f/1.8 EX DG Aspherical Macro
24mm f/2.8 XQ Filtermatic
24mm f/2.8 Aspherical
24mm f/2.8 Super Wide
24mm f/2.8 Super Wide II
28mm f/1.8 Aspherical
28mm f/1.8 EX DG Aspherical Macro
28mm f/2.8 XQ Filtermatic
28mm f/2.8 Mini Wide II
35mm f/1.4 DG HSM 'A'
35mm f/2.8 GN (guide number)

Standard primes

30mm f/1.4 EX DC HSM (45mm equivalent on most APS-C systems, 48mm equivalent on Canon APS-C, 51mm on Sigma, 60mm on Four Thirds)
30mm f/1.4 DC HSM A (available for Canon, Nikon, and Sigma mounts)
50mm f/1.4 EX DG HSM
50mm f/1.4 DG HSM A

Macro primes

Macro 50mm f/2.8 EX
Macro 50mm f/2.8 EX DG
Macro 55mm f/2.8 XQ
Macro 70mm f/2.8 EX DG
Macro 90mm f/2.8
Macro 100mm f/2.8 XQ
Macro 105mm f2.8 EX
Macro 105mm f/2.8 EX DG
Macro 105mm f/2.8 EX DG OS HSM
APO Macro 150mm f/2.8 EX DG HSM
APO Macro 150mm f/2.8 EX DG OS HSM
APO Macro 180mm f/2.8
APO Macro 180mm f/2.8 EX DG OS HSM
APO Macro 180mm f/3.5 EX DG IF HSM
APO Macro 180mm f/5.6

Telephoto primes

85 mm f/1.4 EX DG HSM ^[11]
135mm f/1.8 XQ
Sigmatel 135mm f/1.8
135mm f/2.5 T-mount
135mm f/2.8
135mm f/3.5
200mm f/2.8 XQ
200mm f/3.5
200mm f/4
APO 300mm f/2.8 EX DG HSM
APO 300mm f/2.8
300mm f/4 XQ
APO 300mm f/4 Macro
APO 300mm f/4 HSM Macro
APO 300mm f/4.5
300mm f/5.6
400mm f/5.6
400mm f/5.6 Mirror
APO 400mm f/5.6
APO 400mm f/5.6 Macro
APO 400mm f/5.6 HSM Macro
500mm f/4 Mirror-Ultratelephoto
APO 500mm f/4.5
APO 500mm f/4.5 EX DG HSM
APO 500mm f/7.2
500mm f/8 Mirror
600mm f/8 Mirror
APO 800mm f/5.6 EX DG HSM
APO 1000mm f/8
1000mm f/13.5 Mirror

DC lenses for APS-C

4.5mm f/2.8 EX DC Circular Fisheye HSM
8–16mm f/4.5-5.6 DC HSM
10mm f/2.8 EX DC Fisheye HSM
30mm f/1.4 EX DC HSM
10–20mm f/3.5 EX DC HSM
10–20mm f/4–5.6 EX DC HSM
17–50mm f/2.8 EX DC OS HSM
17–70mm f/2.8–4.5 DC MACRO HSM
17–70mm f/2.8-4.0 DC OS MACRO HSM
17–70mm f/2.8-4.0 DC OS MACRO HSM 'C'
18–35mm f/1.8 DC HSM A
18–50mm f/2.8 EX DC
18–50mm f/2.8 EX DC MACRO
18–50mm f/2.8-4.5 DC OS HSM
18–50mm f/3.5–5.6 DC
18–125mm f/3.5–5.6 DC
18–125mm f/3.8–5.6 DC OS HSM
18–200mm f/3.5–6.3 DC
18–200mm f/3.5–6.3 DC OS (HSM Version for Nikon only)
18–200mm f/3.5-6.3 DC OS HSM II
18–200mm f/3.5-6.3 DC Macro OS HSM C
18–250mm f/3.5–6.3 DC OS HSM
50-100mm f/1.8 DC HSM ^[12]
50–150mm f/2.8 EX DC HSM
50–150mm f/2.8 EX DC HSM II
50–150mm f/2.8 EX DC OS HSM
55–200mm f/4–5.6 DC

DN lenses for MILC

19mm f/2.8 EX DN
19mm f/2.8 DN | A
30mm f/2.8 EX DN
30mm f/2.8 DN | A
60mm f/2.8 DN | A

Lawsuit

In 2011, Nikon filed a suit against Sigma, alleging it had violated patents relating to Nikon's "Vibration Reduction" image stabilisation technology.^[13] In 2015, the suit ended through settlement, with no details disclosed.^[14]

References

↑ "Company Summary". Sigma Corp. Retrieved September 28, 2015.
↑ "Company Snapshot". Bloomberg L.P. Retrieved September 28, 2015.
↑ Werner Publishing (2006), PCPhoto Best Tips & Techniques for Digital Photography, ISBN 1-57990-697-4
↑ "Michihiro Yamaki, Sigma founder and CEO dies: Digital Photography Review". Digital Photography Review. January 27, 2012. Retrieved January 28, 2012.
↑ "Sigma AF 8-16mm f/4.5-5.6 DC HSM - Lab Test / Review". Photozone.de. May 1, 2010. Retrieved August 29, 2012.
↑ "Sigma releases SD1 flagship digital SLR". Digital Photography Review. September 21, 2010. Retrieved October 17, 2010.
↑ "The Sigma Saga". LensRentals.com. September 12, 2008. Archived from the original on October 16, 2008.
↑ "Lens Repair Data". LensRentals.com. May 17, 2009.
↑ "Sigma Corporation's new Mount Conversion Service enables lens use across camera systems" (Press release). Sigma Corp. of America. August 1, 2013. Retrieved August 2, 2013.
↑ "Sigma launches stabilized 70-200mm F2.8 telezoom". Digital Photography Review. February 20, 2010. Retrieved January 28, 2012.
↑ "Sigma releases 85mm F1.4 EX DG HSM". Digital Photography Review. February 20, 2010. Retrieved January 28, 2012.
↑ http://www.sigmaphoto.com/50-100mm-f1-8-dc-hsm-art
↑ http://www.dpreview.com/articles/1662465553/nikonsigmadispute
↑ http://www.imaging-resource.com/news/2015/04/21/nikon-and-sigma-reach-settlement-in-os-patent-infringement-case

External links

(English) Sigma Corporation
(English) Sigma Corporation of America
(French) Sigma France
(French) List of Sigma lenses + informations
(English) Canon EOS Technoclopedia: Sigma AF Lenses for Canon EF - a lens chart with technical data, comments and test references, including discontinued models
(English) Review of the Sigma 120–300mm f/2.8 EX DG HSM and 300–800mm f/5.6 EX DG HSM from the Royal Photographic Society Journal
(English) (French) The largest database of M42 mount lenses and Pentax K compatible, all Sigma's compatible (more than 5000 models) PhotoPentax.com

Sigma Digital SLR timeline

	2002				2003				2004				2005				2006				2007				2008				2009				2010				2011				2012				2013
	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4	1	2
APS-C	SD9							SD10														SD14													SD15			SD1				SD1 Merrill

Sigma lenses

DC Lenses (Crop-sensor DSLRs only)	4.5mm f/2.8 EX DC Circular Fisheye HSM 8-16mm f/4.5-5.6 DC HSM 10mm f/2.8 EX DC Fisheye HSM 30mm f/1.4 EX DC HSM 10-20mm f/3.5 EX DC HSM 10-20mm f/4-5.6 EX DC HSM 17-50mm f/2.8 EX DC OS HSM 17-70 f/2.8-4 DC MACRO 18–35mm f/1.8 DC HSM A 18-50mm f/2.8 EX DC Macro 18-50mm f/2.8-4.5 DC OS HSM 18-50mm f/3.5-5.6 DC 18-125mm f/3.8-5.6 DC OS HSM 18-200mm f/3.5-6.3 DC 18-200mm f/3.5-6.3 DC OS 18-250mm f/3.5-6.3 DC OS HSM 18-250mm f/3.5-6.3 DC Macro OS HSM 18–300mm f/3.5–6.3 DC OS HSM Macro C 50–100mm f/1.8 DC HSM A APO 50-150mm f/2.8 EX DC HSM 55-200mm f/4-5.6 DC

DN Lenses(Mirrorless interchangeable-lens cameras only)	19mm f/2.8 EX DN 30mm f/2.8 EX DN

Wide-Angle Zoom	12-24mm f/4.5-5.6 17-35mm f/2.8-4 EX DG ASPHERICAL HSM 24-35mm f/2 DG HSM Art

Standard Zoom	28-70mm f/2.8 EX DG 28-70mm f/2.8-4 DG 28-300mm DG 24-70mm f/2.8 EX DG HSM

Telephoto Zoom	50-500mm f/4-6.3 DG APO 70-200mm f/2.8 II EX DG MACRO HSM 70-200mm f/2.8 EX DG OS HSM 70-300mm f/4-5.6 APO DG Macro 100-300mm f/4 EX DG HSM 120-300mm f/2.8 EX DG HSM 120-300mm f/2.8 DG OS HSM S APO 120-400mm f/4.5-5.6 DG OS HSM APO 150-500mm f/5-6.3 DG OS HSM APO 150-600mm f/5-6.3 DG OS HSM C APO 150-600mm f/5-6.3 DG OS HSM S 200-500mm f/2.8 EX DG 300-800mm f/5.6 EX DG HSM

Wide-Angle Prime	14mm f/2.8 EX HSM RF ASPHERICAL 20mm f/1.4 DG HSM Art 20mm f/1.8 EX DG 24mm f/1.4 DG HSM Art 24mm f/1.8 EX DG 28mm f/1.8 EX DG 35mm f/1.4 DG HSM A

Standard Prime	50mm f/1.4 EX DG HSM 50mm f/1.4 DG HSM A 85mm f/1.4 EX DG HSM

Super Telephoto Prime	300mm f/2.8 EX DG HSM 500mm f/4.5 EX DG HSM 800mm f/5.6 EX DG HSM

Distorting lenses	8mm f/3.5 EX DG circular fisheye 8mm f/4 EX DG circular fisheye

Macro Prime	50mm f/2.8 EX DG 70mm f/2.8 EX DG 105mm f/2.8 EX DG 150mm f/2.8 APO Macro EX DG HSM 180mm f/3.5 EX DG

Electronics industry in Japan

Companies

Current	Alaxala Networks Alinco Alps Alpine Anritsu AOR Audio-Technica Brother Canon Casio Citizen Watch Cosina D&M Holdings Denon Marantz Daikin Dainippon Screen Denso DNP EIKI Eizo Elpida ESP Guitars FANUC Fostex Fuji Electric Fujifilm Fuji Xerox Fujitsu Fujitsu Ten Funai Furuno Futaba Hamamatsu Photonics Hirose Electric Hitachi Clarion Hitachi Maxell Hoya Ibanez Icom Ikegami Tsushinki I-O Data Iwatsu Japan Display JEOL JRC JR Propo JVC Kenwood JVC Kenwood Kawai Keyence Kiramek Konica Minolta KO Propo Korg Kyocera Luxman Mabuchi Motor Mamiya Maspro Melco Minebea Mitsubishi Electric Mitsumi Electric Murata Manufacturing Mutoh Nakamichi NEC NEC Casio Mobile Communications Nichia Nichicon Nidec Nidec Copal Corporation Nikon Nintendo Nitto Denko Oki Olympus Omron Onkyo Orion Electric Panasonic Pioneer Pixela Renesas Electronics Ricoh Pentax Rohm Roland Rubycon Sansui Sanwa Electronic Sega Sammy Sega Seiko Group Pulsar Seiko Seiko Epson Seiko Instruments Sharp Shimadzu Sigma Sony Sony Interactive Entertainment SNK Playmore Star Micronics Stax Sumitomo Electric Taiyo Yuden Tamron TDK TEAC Tiger Tokyo Electron Topcon Toshiba Uniden Wacom Yaesu Yagi–Uda Yamaha Yaskawa Zojirushi Zoom Zuken

Defunct	Aiwa Akai Bronica Chinon Contax Konica Minolta National Norita Okaya Optical Sanyo

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